Yesterday I found out how to turn on the lights with a flip of a lever. Here is a tutorial:
1:Make a building with a ceiling you can reach comfortably.
2:Get on top of the building you just made. (take redstone with you)
3:Wherever you want the light, destroy that/those blocks.
4:Put redstone leading to the hole.Should look like this
&-hole 0-What your build is made of *-Redstone
000000000000000000
0000000&********00
000000000000000000
5:Now go on the inside and make a hole next to the redstone anywhere.Put a lever on the side of the block so that it is facing away from the redstone.
6:Go on top of the building again, this time place a block atop the hole wher the lever is.
7:In the first hole you made place a redstone lamp.
8:Cover up the redstone lamp and your ready to go!